i have chose to go with a kicker 800.2 amp for my two subs the specs are... 500 Watts MAX Power 250 Watts RMS Power Frequency Response: 28Hz - 150KHz Sensitivity: 91dB Rubber Surround One Piece PP Cone Chrome Rigid Pipe Steel Basket 2" 4 Ohms 4-Layer Aluminum Dual Voice Coil Conex/Cotton Spider 40 oz. Magnet
750 Watts MAX Power 375 Watts RMS Power Frequency Response: 25Hz - 120KHz Sensitivity: 93dB Rubber Surround One Piece PP Cone Chrome Rigid Pipe Steel Basket 2" 4 Ohms 4-Layer Aluminum Dual Voice Coil Conex/Cotton Spider 50 oz. Magnet
He is fine as long as he doesn't put them in the same box Give it a shot. As far as the amp goes you are OK for those subs. Hmm... why 2 different subs???